Here I show you a very nice enameled Sterling Silver (marked SIAM 925) decorated locket. It's possible to put in two photos.
Measurement: Including bail 2 " long long and 1" wide(5 x 2.54 cm) locket only: 1.5 x 1" (4 x 2.54 cm) . In the inside there is mark (above) and I'v not earlier seen such work of Siam, you did?